メタデータ名 polygon
<http://xmlns.oracle.com/rdf/geo/srid/4612> POLYGON((141.309022326321 43.0923422000099, 141.309076458167 43.0923917354344, 141.309222811052 43.0925227653818, 141.309320505612 43.0926102840459, 141.309763219245 43.0930220420628, 141.308906233034 43.0935251585191, 141.3084952576 43.0937667326772, 141.308039973584 43.0940627279166, 141.307080330175 43.0931989257451, 141.307563476717 43.0929006323359, 141.307667024927 43.0928440966628, 141.307976155952 43.0926604108954, 141.308247598779 43.0925125629453, 141.308715365016 43.0922341120176, 141.308807212895 43.0921455496601, 141.309022326321 43.0923422000099)) ^^http://www.opengis.net/ont/geosparql#wktLiteral